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Quazar · 06-02-2011, 11:17 AM

I realize I may have posted this in the wrong section originally, so I am posting my questions and updates here because I realized its more appropriate.

I have a 2011 Cruze Eco and have been trying hard to improve my gas mileage in the city. My best tank is 46.8 mpg.

I have started doing EOC, but obviously there are two conditions I am trying to avoid,
1. Killing my ignition switch.
2. Resetting the DIC, especially when coasting at 55 mph speeds I lose (or think I lose) the distant traveled while the DIC resets.

I started reading up on what to kill. I decided to do fuel injectors. So looking at my under hood fuse box, mini fuses 8 and 9 are tied to the injectors.
Fuse 8 = Fuel Injection (Car Manual) (on the box cap it says injector 1 and 3)
Fuse 9 = Fuel Injection / Ignition system (Car manual) ((on the box cap it says injector 2 and 4)

Last night I started testing. I started by pulling Fuse 9, the engine died instantly and DIC didn’t reset. I tested this a couple more times with no codes showing up. Then I tried fuse 8. It surprisingly did nothing for the entire minute the fuse was removed.

Reviewing the layout I also decided to try fuse 5, which is the Ignition System only. The car died instantly, however, when I plugged it back in I could hear something switching. I assumed this was the solenoid or something because I couldn’t see it without removing stuff. Figured it was better to stay away from anything that audibly switched on and off like that.

So, if I understand this correctly. I need to wire an inline fuse (15amp) to a momentary switch inside the car. Connect it to the box with some 18 AWG wire. Then test.

Questions I have are:

Any educated guess on what fuse 8 is for?
Is my assumption about fuse 5 sound?

The main reason I want to EOC over DFCO is DFCO on this car (Waiting for confirmation) does not seem to work at speeds less than 20 MPH, and on the 35 MPH street, I do drop below 20 on a coast to a light. Also I read that over 40 MPH DECO is not as effective, of course this probably depends on the car and the gear ratio? So the window for DFCO seems too small to me to really gain efficiency.

Any suggestions or insights before I continue? I could use any feedback.

06-02-2011, 11:17 AM	#1 (permalink)
Quazar EcoModding Lurker Join Date: May 2011 Location: USA Posts: 27 Thanks: 0 Thanked 4 Times in 4 Posts	Kill switch for M/T 2011 Chevy Cruze Eco I realize I may have posted this in the wrong section originally, so I am posting my questions and updates here because I realized its more appropriate. I have a 2011 Cruze Eco and have been trying hard to improve my gas mileage in the city. My best tank is 46.8 mpg. I have started doing EOC, but obviously there are two conditions I am trying to avoid, 1. Killing my ignition switch. 2. Resetting the DIC, especially when coasting at 55 mph speeds I lose (or think I lose) the distant traveled while the DIC resets. I started reading up on what to kill. I decided to do fuel injectors. So looking at my under hood fuse box, mini fuses 8 and 9 are tied to the injectors. Fuse 8 = Fuel Injection (Car Manual) (on the box cap it says injector 1 and 3) Fuse 9 = Fuel Injection / Ignition system (Car manual) ((on the box cap it says injector 2 and 4) Last night I started testing. I started by pulling Fuse 9, the engine died instantly and DIC didn’t reset. I tested this a couple more times with no codes showing up. Then I tried fuse 8. It surprisingly did nothing for the entire minute the fuse was removed. Reviewing the layout I also decided to try fuse 5, which is the Ignition System only. The car died instantly, however, when I plugged it back in I could hear something switching. I assumed this was the solenoid or something because I couldn’t see it without removing stuff. Figured it was better to stay away from anything that audibly switched on and off like that. So, if I understand this correctly. I need to wire an inline fuse (15amp) to a momentary switch inside the car. Connect it to the box with some 18 AWG wire. Then test. Questions I have are: Any educated guess on what fuse 8 is for? Is my assumption about fuse 5 sound? The main reason I want to EOC over DFCO is DFCO on this car (Waiting for confirmation) does not seem to work at speeds less than 20 MPH, and on the 35 MPH street, I do drop below 20 on a coast to a light. Also I read that over 40 MPH DECO is not as effective, of course this probably depends on the car and the gear ratio? So the window for DFCO seems too small to me to really gain efficiency. Any suggestions or insights before I continue? I could use any feedback.